Pile wire



, Aug. 1926.

DI PETERO FILE W Filed Oct. 15, 1925 I 2 Sheets-Sheet 1 Aug. 3 1926.

J. D] ,PETERO PILE WIRE I 2 Sheets-Sheet 2 Filed Oct. 15, 1925 I Patented Aug. 3, 1926.

UNITED STATES JOHN DI PETERO, OF PHILADELPHIA, PENNSYLVANIA.

PILE WIRE.

Application filed October 15, 1925. Serial No. 62,653..

My invention relates to pile wires for carpet looms.

The pile wires now in use have the wire permanently connected to the head, either by solder, clamps or keys.

The objections to these wires are that, owing to the severe strain under which the wires are pulled, the wires are often pulled out of the head after a short period of use. This requires a new head and wire to replace the broken head and wire, which is expensive and causes costly delays in production.

The objects of my invention are to provide a pile wire in which the wire and head are so connected that it is practically impossible to pull the wire out of the head; which does not require solder for keeping the head and wire connected under severe strains, and in which the head and wire may be quickly disconnected from or connected with each other when either becomes defective or is renewed.

These objects, and other advantageous ends which will be described hereinafter, I attain in the following manner, reference being had to the accompanying drawings, in which Figure 1 is a face view of a pile wire and head connected in accordance with my invention, 7

Figure 2 a section on line 2-2 of Figure 1 showing the wire in full,

Figure .3 a face View partly in section of the head shown in Figure 1,

Figure 4 an enlarged section on line 4-4 of Figure 3,

Figure 5 an enlarged face view of the wire shown in Figure 1,

Figure 6 a section on line 6-6 of Figure 5,

Figure 7 a face view similar to Figure 1, illustrating the parts in another position, and

Figure 8 a section on line 88 of Figure 7 showing the wire in full.

Referring to the drawings, 1 indicates a pile wire and 2 the head to which the pile wire is detachably connected.

The pile wire is shaped at its end to have a shank 3, tenons 4: at the opposite sides of one end of the shank and shoulders 5 at the opposite sides of the other end of the shank. The tenons are preferably of dove-tail cross section and the shoulders are formed by an enlarged part on the shank which with theshank'formsa T-shaped end.

The head is shaped to have a groove.6 1n which'shank 3 fits, mortises 7 at the opposite sides of one end of the groove' into which the tenons 4 fit, and shoulders 8 at the opposite sides of the other end of the groove against which the shoulders 5 abut. An opening 9 is provided to allow a tool to be passed therethroughto force the T-shaped end out of the opening when disconnecting the pile wire from the head.

To attach the pile wire to the head, the T-shaped end of the wire is placed over the groove, shank 3 partly within the groove and the tenons 4 partly within the mortises as shown in Figures 7 and 8. The pile wire is then bent slightly upward as shown in dot-and-dash lines in Figure 8, and slid toward the head so that the tenons slide into the mortises, the T-shaped end snaps into opening 9, and shoulders 5 of the wire abut the shoulders 8 of the head as shown in Figures 1 and 2.

To disconnect the wire, a suitable tool is passed through opening 9 to force the T shaped end of the pile wire out of the opening and raise shoulders 5 above shoulders 8 as shown in dot-and-dash lines in Figure 2. The wire is then pulled away from the head until the tensions are out of the mortises and the wire disconnected from the head.

Should the pile wire or head become defective they may be disconnected and either quickly replaced.

Having a wire connected to the head as above set forth, it is practically impossible to pull or disconnect the wire from the head because the abutment of shoulders 5 and 8 forms a positive lock and the tenons and mortises keep head and pile wire aligned and thereby keep the shoulders in abutment. Connecting the head and wire in this manner does not increase the thickness of the head nor is solder required to keep the wire and head connected under severe strains.

WVhile I have described my invention as taking a particular form, it will be understood that the various parts may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claimaas new andxdesire to seeune by Leta. groove, mortises in the side walls of one ters Patent is: end of the groove and an; opening iormin 1. A pile Wire including a head having shoulders at opposite sides of the other en a groove, mortises in the op qosite sides oi oi the groove; anda Wire having a shank 5 one end of the groove and"sho1flders at 019- in the groove, tenons. in the mortises and an 1 posite sides of the other end of the groove-.;, enlarged part forming shoulders which abut and a Wire having a shank in the groove, the shoulders of the head. tenons in the mortises; and shoulders admit. he testimony Wheneof I have signed my ting the shoulders of the head. name to this specification.

10 2- A. :piflb: wires imcil'udiugsras head having a 1 JOHN DI PESDEROL 

